package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import sun.security.provider.MD5;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;


/**
 * 员工管理
 */
@RestController
@Slf4j
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     * 用户登录
     * @param request
     * @param employee
     * @return
     */
    @RequestMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){
        // 1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (emp==null){
            return R.error("登录失败,该用户不存在");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("登录失败，密码错误");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus()==0){
            return R.error("登录失败，该用户已被禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 增加员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息:{}",employee);
        //给员工设置初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        /*//补全数据
        //创建时间
        employee.setCreateTime(LocalDateTime.now());
        //修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //创建人,(通过session获取当前登录用户的id)
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        //修改人
        employee.setUpdateUser(empId);*/
        //调用service层保存数据
        employeeService.save(employee);
        return R.success("新整员工成功");
    }

    /**
     * 分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(Integer page,Integer pageSize, String name){
        log.info("page = {},pageSize = {} , name = {}",page,pageSize,name);
        //构造分页查询构造器
        Page pageInfo = new Page(page,pageSize);
        //构造查询条件
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加查询条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }


    /**
     * （修改的通用方法）修改员工信息,修改员工状态（启用，禁用）
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> updateEmp(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        /*employee.setUpdateTime(LocalDateTime.now());
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);*/
        /**
         * 测试当前线程的id
         */
        long id = Thread.currentThread().getId();
        log.info("当前线程的id：{}",id);

        employeeService.updateById(employee);
        return R.success("员工信息更新成功");
    }

    /**
     * 修改员工信息时实现原始信息回显
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getEmpById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee emp = employeeService.getById(id);
        if (emp!=null){
            return R.success(emp);
        }
        return R.error("没有查询到员工信息");
    }

}
